DE1205460B - Solid bowl screw centrifuge - Google Patents
Solid bowl screw centrifugeInfo
- Publication number
- DE1205460B DE1205460B DEF40992A DEF0040992A DE1205460B DE 1205460 B DE1205460 B DE 1205460B DE F40992 A DEF40992 A DE F40992A DE F0040992 A DEF0040992 A DE F0040992A DE 1205460 B DE1205460 B DE 1205460B
- Authority
- DE
- Germany
- Prior art keywords
- screw
- inlet opening
- opening
- centrifuge
- solid bowl
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000007787 solid Substances 0.000 title claims description 7
- 239000000463 material Substances 0.000 claims description 15
- 238000000926 separation method Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 2
- 241000237942 Conidae Species 0.000 description 1
- 241000237858 Gastropoda Species 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
- B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B11/00—Feeding, charging, or discharging bowls
- B04B11/02—Continuous feeding or discharging; Control arrangements therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
- B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
- B04B2001/2041—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl with baffles, plates, vanes or discs attached to the conveying screw
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
- B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
- B04B2001/205—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl with special construction of screw thread, e.g. segments, height
Landscapes
- Centrifugal Separators (AREA)
Description
DEUTSCHESGERMAN
PATENTAMTPATENT OFFICE
Int. Cl.:Int. Cl .:
Nummer:
Aktenzeichen:
Anmeldetag:
Auslegetag:Number:
File number:
Registration date:
Display day:
B 04 bB 04 b
Deutsche Kl.: 82 b-6/04German class: 82 b-6/04
1205460
F40992III/82b
15.Oktober 1963
18. November 19651205460
F40992III / 82b
October 15, 1963
November 18, 1965
Die Erfindung bezieht sich auf eine Vollmantel-Schneckenzentrifuge, bei der das Schleudergut durch ein zentrales Rohr zugeführt und durch eine Einlauföffnung in der Wand des Schneckenkörpers in den Trennraum der Schleudertrommel aufgegeben wird.The invention relates to a solid bowl screw centrifuge, in which the material to be centrifuged is fed through a central pipe and through an inlet opening is abandoned in the wall of the screw body in the separating space of the centrifugal drum.
Bei solchen Zentrifugen ist häufig zu beobachten, daß die Ablaufflüssigkeit zwar während einer gewissen Zeit nach der Inbetriebnahme wenig oder keine Feinstoffe enthält, daß jedoch bei längerem Betrieb solche Feinstoffe in steigendem Maß in der Ablaufflüssigkeit auftreten, mithin die Trennleistung der Zentrifuge stark beeinträchtigt wird. Die Ursache für ein solches Verhalten ist darin zu sehen, daß die Feinstoffe, die sich vorwiegend im weiteren Teil der Schleudertrommel abscheiden, durch die Schnecke in die Förderrichtung zur Feststoffaustragöffnung gebracht und dabei an der Einlaufstelle für das Schleudergut vorbeigeführt werden, wo sie durch das einlaufende Gut wieder aufgewirbelt werden.In such centrifuges it is often observed that the drainage liquid, although during a certain Time after commissioning contains little or no fines, but that for a longer period of time In operation, such fines occur to an increasing extent in the drainage liquid, and consequently the separation efficiency the centrifuge is severely impaired. The cause of such behavior is to be seen in the fact that the Fine substances, which are mainly deposited in the further part of the centrifugal drum, by the screw brought in the conveying direction to the solids discharge opening and thereby at the inlet point for the centrifuged material be passed, where they are whirled up again by the incoming goods.
Die Öffnung, durch die das Schleudergut in den Trennraum abgegeben wird, liegt in der Regel an einer axial mittleren Stelle des Trennraumes, und das in den Trennraum eintretende Schleudergut, insbesondere das Grobkorn, wird mit großer Kraft an die Wand der Schleudertrommel geschleudert und wirbelt dabei den bereits abgesetzten Feinstoff wieder auf, so daß sich im Trennraum ein Kreislauf dieses Feinstoffes bildet, der zur Folge hat, daß sich die ablaufende Flüssigkeit mit zunehmender Betriebsdauer immer mehr mit diesem Feinstoff anreichert.The opening through which the material to be centrifuged is discharged into the separating chamber is usually adjacent an axially central point of the separation space, and the centrifugal material entering the separation space, in particular the coarse grain is thrown against the wall of the centrifugal drum with great force and whirls in doing so, the already settled fine material is reapplied, so that there is a cycle of this in the separating space Fine matter forms, which has the consequence that the draining liquid with increasing operating time more and more enriched with this fine substance.
Es ist bereits versucht worden, diese nachteilige Erscheinung durch Aufgabe geringerer Schleudergutmengen in der Zeiteinheit zu beseitigen, jedoch blieb nach längerem Betrieb der Feinstoffanteil in der Ablaufflüssigkeit auch dann praktisch unverändert, wenn die Schleudergutaufgabe einen erheblichen Teil vermindert wurde. Es wurde auch versucht, zwischen der Einlauföffnung, durch die das Schleudergut in den Trennraum eingeführt wird, und der Wand der Schleudertrommel Schutzeinrichtungen anzuordnen, die ein Aufprallen des eingeführten Schleudergutes auf diese Wand verhindern sollen, jedoch brachte auch dies kein brauchbares Ergebnis.Attempts have already been made to remedy this disadvantageous phenomenon by giving up smaller amounts of material to be centrifuged to be eliminated in the unit of time, but after a long period of operation the fines fraction remained in the drainage liquid is practically unchanged even if the task of the centrifuged material is considerable Part was decreased. Attempts have also been made to position between the inlet opening through which the Material to be centrifuged is introduced into the separation space, and the wall of the centrifugal drum protective devices to be arranged that prevent the imported material from hitting this wall should, however, this did not produce any useful result either.
Durch die Erfindung wird jedoch auch bei längerem Betrieb ein praktisch feinstofffreier Ablauf dadurch erzielt, daß nahe der Einlauföffnung für das Schleudergut, in Förderrichtung der Schnecke vor dieser Öffnung, ein zusätzlicher Abschnitt eines weiteren Schneckenganges vorgesehen wird. Hierdurch wird erreicht, daß der bereits abgesetzte Feinstoff so an der Einlauföffnung vorbeigeführt wird, daß an Vollmantel-SchneckenzentrifugeThe invention, however, results in a practically fines-free process even with prolonged operation achieved that near the inlet opening for the material to be centrifuged, in the conveying direction of the screw before this opening, an additional section of a further screw flight is provided. Through this it is achieved that the already settled fine material is guided past the inlet opening in such a way that on Solid bowl screw centrifuge
Anmelder:Applicant:
Flottweg-Motoren-Werk Dr. Georg Bruckmayer, Vilsbiburg (Ndb.)Flottweg engine plant Dr. Georg Bruckmayer, Vilsbiburg (Ndb.)
Als Erfinder benannt:Named as inventor:
Georg Hiller, Vilsbiburg (Ndb.)Georg Hiller, Vilsbiburg (Ndb.)
der Stelle, an der das Schleudergut auf der Schleudertrommel auftrifft, kein Feinstoff vorhanden ist. Der durch diesen zusätzlichen Abschnitt an der Öffnung vorbeigeführte Feststoff gelangt dann in den engeren Teil des Kegelmantels, in dem sich das gröbere Korn des Trenngutes absetzt, und wird zusammen mit diesem ausgetragen.There is no fines at the point where the material to be centrifuged hits the centrifugal drum. The solid passed through this additional section of the opening then reaches the the narrower part of the cone shell, in which the coarser grain of the material to be separated settles, and becomes together carried out with this.
Nach einer bevorzugten Ausführungsform der Erfindung wird die Steigung der Schnecke in der Gegend der Aufgabeöffnung erhöht, vorzugsweise verdoppelt, während die Steigung des zusätzlichen Abschnitts des weiteren Schneckenganges der Steigung der Schnecke vor und nach dem Bereich der Öffnung entspricht.According to a preferred embodiment of the invention, the pitch of the screw in the Area of the feed opening increased, preferably doubled, while the slope of the additional Section of the further screw flight of the pitch of the screw before and after the area of the Opening corresponds.
Zweckmäßigerweise erstreckt sich der Abschnitt des zusätzlichen Schneckenganges über einen Winkelbereich von etwa 120 bis 250°, vorzugsweise etwa 180°. Die Schnecke und der zusätzliche Abschnitt des weiteren Schneckenganges können zwei- oder mehrgängig sein.The section of the additional worm gear expediently extends over an angular range from about 120 to 250 °, preferably about 180 °. The snail and the additional section of the further worm thread can be two or more threads.
Eine beispielsweise Ausführungsform der Erfindung ist an Hand der Zeichnung erläutert, in der ein Mittelabschnitt der Austragschnecke einer Vollmantel-Schneckenzentrifuge dargestellt ist.An example embodiment of the invention is explained with reference to the drawing, in which a Middle section of the discharge screw of a solid bowl screw centrifuge is shown.
Das Schleudergut tritt durch die Einlauföffnung 2 in den Trennraum, der durch einen die Schnecke 1 umschließenden, in der Zeichnung nicht dargestellten Mantel begrenzt wird. In Förderrichtung der Schnecke — in der Zeichnung von links nach rechts — liegt vor der Einlauföffnung 2 ein Abschnitt 3 eines zusätzlichen Schneckenganges. Die Steigung der Schnecke 1 ist im Bereich der Einlauföffnung 2 vergrößert, während die Steigung des zusätzlichen Abschnittes 3 etwa der Steigung der Schnecke 1 außerhalb des Bereiches der Einlauföffnung 2 entspricht.The material to be centrifuged passes through the inlet opening 2 into the separating space, which is formed by a screw 1 enclosing coat, not shown in the drawing, is limited. In the conveying direction of the Screw - in the drawing from left to right - there is a section in front of the inlet opening 2 3 of an additional worm gear. The pitch of the screw 1 is in the area of the inlet opening 2 enlarged, while the slope of the additional section 3 is approximately the slope of the Screw 1 outside the area of the inlet opening 2 corresponds.
Claims (2)
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEF40992A DE1205460B (en) | 1963-10-15 | 1963-10-15 | Solid bowl screw centrifuge |
| GB4176664A GB1050847A (en) | 1963-10-15 | 1964-10-13 | |
| FR991465A FR1419751A (en) | 1963-10-15 | 1964-10-14 | Worm-type centrifuge and full housing |
| SE12385/64A SE309388B (en) | 1963-10-15 | 1964-10-15 | |
| CH1340864A CH423632A (en) | 1963-10-15 | 1964-10-15 | Solid bowl screw centrifuge |
| NL6411985A NL125693C (en) | 1963-10-15 | 1964-10-15 | |
| BE654396A BE654396A (en) | 1963-10-15 | 1964-10-15 | |
| DK509564AA DK112019B (en) | 1963-10-15 | 1964-10-15 | Worm centrifuge with full jacket. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEF40992A DE1205460B (en) | 1963-10-15 | 1963-10-15 | Solid bowl screw centrifuge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1205460B true DE1205460B (en) | 1965-11-18 |
Family
ID=7098468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEF40992A Pending DE1205460B (en) | 1963-10-15 | 1963-10-15 | Solid bowl screw centrifuge |
Country Status (8)
| Country | Link |
|---|---|
| BE (1) | BE654396A (en) |
| CH (1) | CH423632A (en) |
| DE (1) | DE1205460B (en) |
| DK (1) | DK112019B (en) |
| FR (1) | FR1419751A (en) |
| GB (1) | GB1050847A (en) |
| NL (1) | NL125693C (en) |
| SE (1) | SE309388B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1295494B (en) * | 1965-11-25 | 1969-05-14 | Westfalia Separator Ag | Screw centrifuge with washing device for the thrown off solids |
| WO2006136171A2 (en) * | 2005-06-23 | 2006-12-28 | Westrup A/S | Centrifugal decanter |
-
1963
- 1963-10-15 DE DEF40992A patent/DE1205460B/en active Pending
-
1964
- 1964-10-13 GB GB4176664A patent/GB1050847A/en not_active Expired
- 1964-10-14 FR FR991465A patent/FR1419751A/en not_active Expired
- 1964-10-15 NL NL6411985A patent/NL125693C/nl active
- 1964-10-15 BE BE654396A patent/BE654396A/xx unknown
- 1964-10-15 SE SE12385/64A patent/SE309388B/xx unknown
- 1964-10-15 CH CH1340864A patent/CH423632A/en unknown
- 1964-10-15 DK DK509564AA patent/DK112019B/en unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1295494B (en) * | 1965-11-25 | 1969-05-14 | Westfalia Separator Ag | Screw centrifuge with washing device for the thrown off solids |
| WO2006136171A2 (en) * | 2005-06-23 | 2006-12-28 | Westrup A/S | Centrifugal decanter |
| WO2006136171A3 (en) * | 2005-06-23 | 2007-03-01 | Westrup As | Centrifugal decanter |
Also Published As
| Publication number | Publication date |
|---|---|
| BE654396A (en) | 1965-02-01 |
| FR1419751A (en) | 1965-12-03 |
| NL125693C (en) | 1968-12-16 |
| CH423632A (en) | 1966-10-31 |
| NL6411985A (en) | 1965-04-20 |
| DK112019B (en) | 1968-10-28 |
| SE309388B (en) | 1969-03-17 |
| GB1050847A (en) | 1966-12-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE1011362B (en) | Centrifuge for separating the centrifuged material into a lighter and a heavier liquid component and a sludge component | |
| DE4115347A1 (en) | METHOD AND DEVICE FOR SEPARATING, IN PARTICULAR CLASSIFICATION OF A SOLID-LIQUID MIXTURE | |
| DE3301099C2 (en) | ||
| DE4214771C2 (en) | Wet grading method and apparatus | |
| DE966139C (en) | Centrifuge with a rotating housing and a rotating conveyor | |
| DE2718673A1 (en) | METHOD AND APPARATUS FOR DEWATERING MUD | |
| DE1040459B (en) | Centrifugal drum with a drum space of relatively large length | |
| DE1279551B (en) | Solid bowl centrifuge | |
| DE1205460B (en) | Solid bowl screw centrifuge | |
| DE851483C (en) | Device for separating or thickening solid-liquid mixtures, such as coal or ore slurries | |
| DE3615224C3 (en) | Continuously operating sugar centrifuge | |
| DE1179881B (en) | Method and device for sorting mineral mixtures in a water cyclone | |
| DE1757368C3 (en) | Solid bowl screw centrifuge | |
| EP0405125B1 (en) | Method and apparatus for the post-treatment of heavy phase material in the heavy phase discharge zone of a screw decanter | |
| DE723672C (en) | Centrifugal device for treating a slurry | |
| DE963409C (en) | Screw centrifuge for muddy or fine-grained liquid-solid mixtures | |
| DE855017C (en) | Device for kneading butter, margarine or similar doughy masses | |
| DE2737759A1 (en) | Sludge-thickening centrifuge - has hollow shaft-mounted drum with cylindrical filter inside drum | |
| DE1020575B (en) | Continuously working solid bowl centrifuge with solids discharge by a screw conveyor | |
| DE1194779B (en) | Screw centrifuge with a solid jacket centrifugal drum extended to the end of the discharge for the material liquid | |
| DE1075047B (en) | Centrifuge for separating sludge-containing liquids with a pre-separation chamber without an insert plate | |
| DE1803690A1 (en) | Cyclone separator, which is intended for installation in a housing or the like | |
| DE969241C (en) | Screw extractor for separating one solid and two liquid components from suspensions | |
| AT254219B (en) | Device for separating the solid from the liquid components of suspensions | |
| DE1823332U (en) | DEVICE FOR GENTLE SEPARATION OF SLUDGE LIQUIDS. |